In this paper I outline and discuss the central claims and arguments of J. L. Mackie’s The Miracle of Theism. Mackie argues, in essence, that none of the traditional theistic arguments is successful taken either one at a time or in tandem, that the theist does nothave a satisfactory response to the problem of evil, and that on balance the theistic hypothesis is much less probable than is its denial. He then concludes that theism is unsatisfactory and rationally unacceptable. I argue that he is mistaken in nearly all of his major contentions